/**
 * Animation curve links an input data set to an output data set and defines the interpolation
 * method to use.
 *
 * @category Animation
 */
export class AnimCurve {
    /**
     * Create a new animation curve.
     *
     * @param {string[]} paths - Array of path strings identifying the targets of this curve, for
     * example "rootNode.translation".
     * @param {number} input - Index of the curve which specifies the key data.
     * @param {number} output - Index of the curve which specifies the value data.
     * @param {number} interpolation - The interpolation method to use. One of the following:
     *
     * - {@link INTERPOLATION_STEP}
     * - {@link INTERPOLATION_LINEAR}
     * - {@link INTERPOLATION_CUBIC}
     */
    constructor(paths: string[], input: number, output: number, interpolation: number);
    _paths: string[];
    _input: number;
    _output: number;
    _interpolation: number;
    /**
     * The list of paths which identify targets of this curve.
     *
     * @type {string[]}
     */
    get paths(): string[];
    /**
     * The index of the AnimTrack input which contains the key data for this curve.
     *
     * @type {number}
     */
    get input(): number;
    /**
     * The index of the AnimTrack input which contains the key data for this curve.
     *
     * @type {number}
     */
    get output(): number;
    /**
     * The interpolation method used by this curve.
     *
     * @type {number}
     */
    get interpolation(): number;
}